import _00SetFunc as ss
import __00SetRelation as sr

#关系对称性判断
X={1,2,3,4}
R= {(1,2),(3,2),(4,1),(1,3),(3,1),(2,1),(1,4),(2,3),(4,3),(2,2),(3,4)}
tv=sr.issymmetric(X,R)
print("tv",tv)